Q. What are homogametes and heterogametes?

Q. Describe haplodiploid sex determination system in honey bees.

Q. What is foetal ejection reflex?

Q. a. What are the features of an ideal contraceptive?

Q. Mention any two examples of evolution by anthropogenic action?

Q. Sketch the diagrammatic representation of replication of retrovirus inside on animal cell.

Q. Name the type of antibodies produced during allergy.

Q. Explain the term inbreeding depression.

Q. Write the restriction site of EcoRI enzyme?

Q. State Hardy-Weinberg principle of genetic equilibrium. Write any four factors affecting the equilibrium.

Q. Draw a neat labelled diagram of PBR322.

Q. Write the name of toxic substance responsible for fever and chill in malaria.

Q. Draw and describe the structure of a matured embryosac of angiosperm.

Q. Write a short note on ecosystem services.

Q. Invasion of alien animal species eliminates the native animal species. Give two examples.

Q. Mention the role of Methanobacterium in rumen of cattle.

Q. What are eurythermal organisms?

Q. What are the important components of poultry farm management?

Q. Explain the inheritance of one gene with reference to stem height of Garden pea plant.

Q. Distinguish between homozygous and heterozygous plant.

Q. Define endemism. Name any two regions of accelerated habitat loss in India.

Q. Draw a neat labelled diagram of T.S of young anther.

Q. Define saltation.

Q. What is implantation?

Q.

Draw a neat labelled diagrammatic sectional view of female reproductive system.

Q. What is ecological succession? How is hydrarch succession different from xerarch succession?

Q. Explain the term Interspecific hybridisation.

Q. What is innate immunity? Mention any two types of innate immunity barriers.

Q.

Q. Write the methods to introduce foreign DNA into the host cells.